Overflow Detection Functional Model

Versal ACAP Technical Reference Manual (AM011)

Document ID
AM011
Release Date
2022-04-26
Revision
1.4 English

Overflow Detection Mode

If the interval bit in the counter control register is not set, the counter can count up to or down from its full 32-bit value. An interrupt is generated when the count passes through zero. To increment, when the counter value register reaches FFFF_FFFFh, it overflows to zero, and then the overflow interrupt is set and counting up is restarted. To decrement, when the counter value register reaches zero, the overflow interrupt is set. The counter then overflows to FFFF_FFFFh and counting down is restarted.